How many molecules of oxygen can each molecule of hemoglobin carry?
A. 1
B. 2
C. 4
D. Approximately 100
E. Approximately 280 million
Answer: C
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________ is a painful viral infection occurring along the dermatomes of the trunk that usually strikes after the age of 50.
Fill in the blank(s) with the appropriate word(s).
Salt was added to a beaker of distilled water (the water was not stirred). A sample taken from the bottom of the beaker was found to be 20% salt. At the same time, a sample taken from the top of the beaker was found to be 2% salt. After 24 hours
A. the samples would still be 2% and 20% respectively. B. the difference in the percentage of salt between the top and bottom samples would increase. C. the salt would float to the top. D. the percentage of salt in the top and bottom samples would be approximately equal. E. None of the choices are correct.
Which letter is associated with the line that is a thin protein structure that serves as an attachment site for thin filament ends?
A. I B. A C. Z D. M E. H
In smooth muscle cells, ________ functions in a manner analogous to troponin.
A. myoglobin B. tropomyosin C. titin D. calmodulin